John was on the uppermost floor of the three-storey gatehouse.

约翰在这栋三层门房的最高层。

《柯林斯英汉双解大词典》

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It also submitted plans for the Island Point site on Westferry Road, which include three-storey townhouses and maisonettes along with apartment buildings which would be from three to five storeys high.

BBC: Views sought over 'UK's highest' residential tower

Four people have been rescued after a three-storey building collapsed in Sheffield city centre.

BBC: Sheffield city centre building collapse prompts rescues

Their three-storey mansion has an elaborate, though crumbling, facade that features arched windows and protruding balconies.

BBC: Asia